_________世纪前后，日本各岛开始出现奴隶制国家；_______世纪，大和统一了日本。
1；5
The garden, ________ with a high wall and thick trees, is much bigger than what it used to be.[ ]
A．having surrounded
B．surrounded
C．surrounding
D．which surrounds
熬制糖浆最好使用（）。
A、砂锅
B、铝锅
C、生铁锅
D、不锈钢锅
